CUET Mathematics 2025 15 May Shift 2 PYQs

A random sample of size 16 has 53 as mean. The sum of the squares of the deviations taken from mean is 150. If the population mean is 56 then the value of t-test statistic is:

For 95% confidence interval for a population mean reported to be 132 to 142 with standard deviation $\sigma = 17.85$ then the sample size used in this case, is:

[Given that: $Z_{0.025} = 1.96$]

Which of the following are types of "statistical inferences"?

(A) Point estimation

(B) Interval estimation

(C) Marginal estimation

(D) Hypothesis testing

Choose the correct answer from the options given below: